I'm having problem enabling Animation Nodes in blender 2.82
I had a similar problem when I upgraded recently. 

I suspect you need to reinstall the vc_redist.x64 which has some windows features that AN uses.

Check out this link on the AN github, third item titled "Import Error: DLL load failed"

https://github.com/JacquesLucke/animation_nodes/issues/1240

After I reinstalled vc_redist, I went through the AN install process again and it worked normally.

HTH